Spring offers various ApplicationContext implementations, which allows us to choose different ways of how we want to provide the configuration metadata. The most common ways are XML-based, annotation-based, and Java-based.

The different container implementations have historically emerged in Spring. Quarkus makes a hard cut here and only allows us to use Java-based configuration metadata for our POJOs.

The purpose of this Jira is to develop a rule that will identify XML-based or annotation-based Spring Bean configuration.

 Reference